Revert 283052 "Add browser_extensions to GN build."

trunk/src/build/config/linux/BUILD.gn

Index: trunk/src/build/config/linux/BUILD.gn
===================================================================
--- trunk/src/build/config/linux/BUILD.gn	(revision 283056)
+++ trunk/src/build/config/linux/BUILD.gn	(working copy)
@@ -3,7 +3,6 @@
 # found in the LICENSE file.
 
 import("//build/config/linux/pkg_config.gni")
-import("//build/config/features.gni")
 import("//build/config/sysroot.gni")
 import("//build/config/ui.gni")
 import("//tools/generate_library_loader/generate_library_loader.gni")
@@ -117,22 +116,6 @@
   defines = [ "USE_GCONF" ]
 }
 
-# If brlapi isn't needed, don't require it to be installed.
-if (use_brlapi) {
-  config("brlapi_config") {
-    defines = [ "USE_BRLAPI" ]
-  }
-
-  # TODO(GYP) linux_link_brlapi support. Is this needed?
-  generate_library_loader("libbrlapi") {
-    name = "LibBrlapiLoader"
-    output_h = "libbrlapi.h"
-    output_cc = "libbrlapi_loader.cc"
-    header = "<brlapi.h>"
-    config = ":brlapi_config"
-  }
-}
-
 pkg_config("gio_config") {
   packages = [ "gio-2.0" ]
   defines = [ "USE_GIO" ]